diff --git a/README.md b/README.md
index 923da67..a5714b7 100644
--- a/README.md
+++ b/README.md
@@ -132,6 +132,7 @@ Quarto links:
 -   [quarto using bibtex and CSL](https://github.com/quarto-dev/quarto-examples/tree/main/appendix-csl)
 -   [quarto doc about github-pages](https://quarto.org/docs/publishing/github-pages.html)
 -   [example `_quarto.yml`](https://github.com/quarto-dev/quarto-web/blob/main/_quarto.yml)
+-   [Quarto for Scientists](https://qmd4sci.njtierney.com/)
 
 My projects:
 
diff --git a/_quarto.yml b/_quarto.yml
index 3474d3b..ea02e45 100644
--- a/_quarto.yml
+++ b/_quarto.yml
@@ -31,7 +31,7 @@ book:
   site-url: https://rreece.github.io/quarto-example
   repo-url: https://github.com/rreece/quarto-example
   favicon: img/markdown-favicon-196x196.png
-  cover-image: img/The-Scream-Munch1893.png
+  cover-image: img/The-Scream-Munch-1893.jpg
 #  image: "quarto-dark-bg.jpeg"
 #  google-analytics: "G-FV9Z7SDZ0M"
 
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